Font-size in firefox is bigger than is should

Question

I defined in my CSS file font-size property for the body

body {
  font-size : 12px;
}

I wanted to have the size of font the same as in http://www.stackexchange.com site.

It works in chromium browser but does not work in firefox. The size of font in firefox is bigger.

Where could be the problem?

thank you

Can you give a link to your site? It's easier to answer your question then.
Are you sure you haven't actually told Firefox to do this, either via Zoom or a minimum font size?
@Su' But stackexchange is OK in size. Is it possible that firefox applied zoom only to some pages and remembers this option for a long time? I sometimes change the keyboard and press zoom by mistake.
You can reset the zoom (on version 3) by choosing View->Zoom->Reset. On v3 and v4 you can press ctl and zero to reset it.

Su' · Accepted Answer · 2011-04-27 15:52:42Z

up vote 3 down vote accepted

This turned out(see comments) to have been Firefox stashing a value for page zoom. Can be reset with Ctrl-0.

answered Apr 27 '11 at 15:52

Su'
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1 Answer